* {
	font-family: arial;
}

nav {
	border-top: 5px purple solid;
}

nav .container {
	margin-top: 2.5rem;
}

.nav-link {
	color: black;
}

banner img {
	margin-top: 75px;
}

banner .container {
	text-align: center;
}

.butt {
	background: #6b15a1;
	padding: 10px 25px 10px 25px;
	border-radius: 4px;
}

main {
	margin-top: 120px;
}

main h6 {
	text-align: center;
}

.marin {
	height: 355px;
	border-radius: 4px;
	border: 1px solid #dddddd;
	position: relative;
}

main .row .col-md-4 .top {
	background-size: 100%;
	width: 100%;
	height: 150px;
}

main .row .col-md-4 .touxiang {
	top: 95px;
	bottom: 0;
	left: 115px;
	right: 0;
	border: white 1px solid;
	position: absolute;
	border-radius: 50%;
	background-size: 100%;
	width: 100px;
	height: 100px;
}

main .row .col-md-4 {
	text-align: center;
}

main .row .col-md-4 h6 {
	margin-top: 55px;
}

main .row .col-md-4 a {
	border-radius: 4px;
	color: white;
	background: #6b15a1;
	padding: 10px 15px 10px 15px;
}

footer {
	margin-top: 135px;
}

footer .container {
	border-radius: 2px;
	padding-top: 30px;
	height: 100px;
	border: 1px solid #dddddd;
	border-top: 5px solid purple;
}

.button {
	float: right;
	color: white;
}

.button:hover {
	color: white;
}

.end {
	padding-top: 85px;
	padding-bottom: 75px;
}

.nav-item .nav-link {
	color: purple;
}

.navbar .container .nav-link:hover {
	color: purple;
}

@media (max-width:600px) {
	banner .container .row {
		margin: auto;
	}
	banner .container .button{
		float: none;
	} 
	.marin{
		margin-top: 20px;
		margin-bottom: 20px;
	}
	footer .container{
		height: auto;
	}
}